On Thu, 13 Jan 2005 15:16:53 +0100, S55M wrote: > So K2 Gentelmans...one question.. > > To fix RF switching problem in KPA100 there are 3 way's available (posted) > > 1. 12pF to ground from 1n4007's junction (just mooves a problem arround) > > 2. 1K resistor instead of RFC3 (affects RX preformance and marginal > switching at high power levels) > > 3. Change RFC3 100uH with 1mH choke (dont know abt side effects but shure > want to know the current rating of choke, cause i suppose must be at least > 150mA or more?) > > Which way is the best for now? > > All kind of Help is Wellcome! > Thanks in advance! > > S55M-Adi > K2-3204 > Adi,
There is an Errata from Elecraft which does not appeared to have made it onto their Web site yet. It is:- ----------------------------------------------------------- K2/100 MANUAL (Appendix G) ERRATA Rev. C-3, December 14, 2004 ----------------------------------------------------------- a) A 1k resistor is fitted across RFC3. b) R4 in the HV bias supply is changed from 100k to 39k. The 1k resistor damps out the resonance on 80m in my KPA100, and I no longer experience the problem. 73 Stewart G3RXQ _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
